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Sea Level Rise Impacts Mangrove Carbon Stores
3 Jun
Summary
- Mangroves store 15% of ocean carbon, primarily in their soils.
- Sea level rise may initially boost carbon in some spots, but decline long-term.
- Mangroves efficiently remove nitrogen pollution, offering significant ecological value.
Mangrove forests play a critical role in the Earth's ecosystem, serving as wildlife havens, substantial carbon stores, and natural storm defenses. Despite their importance, these coastal ecosystems are not immune to the escalating impacts of climate change, particularly rising sea levels.
A recent study involving researchers from the University of Exeter, Colombia, and the U.S. has introduced new insights into how sea-level rise affects mangrove carbon accumulation. While some localized areas might see an initial increase in carbon storage due to rising waters, the long-term prognosis indicates a decline in carbon storage across entire mangrove forests over the next century. This finding contrasts with earlier research that suggested rising seas could enhance carbon storage.
Mangroves, comprised of salt-tolerant plants, cover less than 1% of the planet's surface but sequester approximately 15% of all ocean carbon, predominantly within their soils. Experts emphasize that protecting these vital ecosystems is a wise investment for people, nature, and the climate, as they outperform many tropical forests in carbon storage and protect coastlines. Furthermore, research from the Chinese University of Hong Kong highlights mangroves' remarkable efficiency in removing nitrogen pollution from coastal waters, providing an annual ecological service valued at over US$8.5 billion.
